Organic Semiconductor Compound Formula I for OLED Voltage Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
There is a need to improve the performance of organic semiconductor materials and devices, particularly in terms of operating voltage, voltage stability, current efficiency, and lifetime, as well as to enhance the thermal properties of these compounds.
Innovation Solution
A compound of formula (I) is introduced, which includes specific aryl and heteroaryl groups with particular substituents, and is used in an organic semiconductor layer to improve the performance of organic electronic devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional organic semiconductor materials are used, then device structure and manufacturing process remain simple, but operating voltage is high and voltage stability deteriorates over time
Solution Approach 1:
The patent applies parameter changes by modifying the molecular structure of organic semiconductor materials through specific chemical substitutions. Formula (I) introduces particular aryl and heteroaryl groups with defined substituents, while Formula (II) specifies electron-withdrawing groups at particular positions. These structural parameter changes directly reduce operating voltage and improve voltage stability without requiring complex device architecture modifications.
Solution Approach 2:
The patent employs composite materials by combining multiple functional groups within the organic semiconductor molecules. The compounds integrate electron-transporting moieties with specific substituent groups (Formula II) to create composite molecular structures that achieve both low operating voltage and high voltage stability. This molecular-level composite approach resolves the contradiction by embedding multiple functions within a unified material system.
2Productivity
If conventional organic semiconductor materials are used, then manufacturing process remains simple, but current efficiency and lifetime are insufficient
Solution Approach 1:
The patent improves current efficiency and lifetime by changing the chemical parameters of the semiconductor materials. The specific molecular formulas (I) and (II) with defined substituent groups enhance charge transport properties and device performance. These material parameter changes achieve superior productivity metrics without complicating the manufacturing process, as the compounds can be deposited using standard OLED fabrication techniques.
3Temperature
If conventional organic semiconductor materials are used, then glass transition temperature and thermal stability are insufficient, but material selection and synthesis remain straightforward
Solution Approach 1:
The patent addresses thermal stability by changing the molecular parameters through specific structural design. Formula (I) and (II) incorporate rigid aryl and heteroaryl groups with electron-withdrawing substituents, which increase glass transition temperature and thermal stability. These parameter changes achieve high-temperature performance while maintaining reasonable synthetic accessibility through established organic chemistry methods.
Data Source
AI summary
The present invention relates to a compound of formula (I) for use in organic electronic devices, a composition comprising a compound of formula (IV) and at least one compound of formula (VIa) to (VId), an organic semiconductor layer comprising the compound or composition, an organic electronic device comprising the organic semiconductor layer, and a display device comprising the organic electronic device.